I tend to get the smelly bacteria going good every so often, especially when I need to take a lot of Iron, and like some of the research showed I actually get good results with Pepto Bismol for the odorIt seems for me after couple of weeks I can stop and they stay away, and I do seem to get some help from probiotics, both in volume but in odor (probably because if I get them going really well they eat enough that there isn't so much left over to make odor with).K.